73466806681 has 2 divisors, whose sum is σ = 73466806682. Its totient is φ = 73466806680.

The previous prime is 73466806663. The next prime is 73466806823. The reversal of 73466806681 is 18660866437.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69493395456 + 3973411225 = 263616^2 + 63035^2 .

It is a cyclic number.

It is not a de Polignac number, because 73466806681 - 2⁵ = 73466806649 is a prime.

It is a super-2 number, since 2×73466806681² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (73466806181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36733403340 + 36733403341.

It is an arithmetic number, because the mean of its divisors is an integer number (36733403341).

Almost surely, 2^73466806681 is an apocalyptic number.

It is an amenable number.

73466806681 is a deficient number, since it is larger than the sum of its proper divisors (1).

73466806681 is an equidigital number, since it uses as much as digits as its factorization.

73466806681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6967296, while the sum is 55.

The spelling of 73466806681 in words is "seventy-three billion, four hundred sixty-six million, eight hundred six thousand, six hundred eighty-one".